HP Color LaserJet 4550 Bedienungsanleitung

hp color L as erJet 4 5 5 0/4 5 00 s er i es qui c k r ef er ence se r v ice gui de www.GovTechMedia.com[...]

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HP Color LaserJet 4550/4500 Quic k Ref erence Ser vice Guide Vo l u m e I No vember 2000 Edition www.GovTechMedia.com[...]

Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714 U.S.A. © Cop yright H e wlett-P ac kard Company 2000 All Rights Reser v ed. Reproduction, adaptation, or translation without prior written per mission is prohibited, e xcept as allow ed under the cop yr i ght la ws. Publ ication n umber 5963-7921 First edition, Nov ember 2000 Wa r [...]

EN iii Contents 1 T roub leshooting control panel messages . . . . . . . . . . . . . 5 2 Ser vice tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 3 P ow er supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 4 Input/Output (I/O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 5 Med[...]

iv EN Or dering other man uals This HP Color LaserJet F amily Quick Ref erence Ser vice Guide has been created to help the HP LaserJet ser vice engineer quic kly troub leshoot common pr inter problems . While this ref erence is intended to provide inf orm ation the ser vice engineer will need f or on-site repair of HP LaserJet color products, it is[...]

EN Overview 5 1 T roub leshooting control panel messages Overview This chapter provides a list of control panel messages f or the HP Color LaserJet printers. Alphabetical messages are listed first, f ollow ed by numerical messages. Control panel messages that are self-e xplanator y are not included. See the ser vice manual f or more detailed inf or[...]

6 Chapter 1 Troubleshooting control panel messages EN Pre-tr oub leshooting chec klist W ARNING! Alwa ys tur n off , then unplug, the pr inter bef ore ser vicing. Current is present in the DC pow er supply whene v er the printer is plugged in. Note The customer is responsib le f or ensur ing that the maintenance units are in good condition. Bef ore[...]

EN Pre-troubleshooting checklist 7 1 • Has the printer hardware or software configur ation changed? Or could the prob lem be associated with any specific softw are? – Contact the Customer Care Center f or software-related prob lems (see Chapter 11, “ Ser vices and suppor t resources ” ). • Could the prob lem be related to network configur[...]

8 Chapter 1 Troubleshooting control panel messages EN Contr ol panel messa ges Alphabetical messages A CCESS DENIED MENUS LOCKED Appears f or appro ximately 5 seconds when a user has attempted to select a menu v alue while the printer control panel locking is enab led. l See the system administrator f or access to the printer control panel. B AD DU[...]

EN Control panel messages 9 1 CANNO T DUPLEX CLOSE REAR BIN The printer cannot duplex because the rear output bin is open. 1. Close the rear output bin door . 2. If the error message does not clear , tur n the pr inter off and then on. CANNO T DUPLEX CHECK REAR BIN alter nates with CANNO T DUPLEX CHECK P APER The printer cannot duplex because the r[...]

10 Chapter 1 Troubleshooting control panel messages EN CLOSE MIDDLE FR ONT DRA WER The dra wer that holds the intermediate transf er belt is open. This dra wer is called the ITB dr aw er , but is ref erred to as the middle fr ont dra wer f or end users . Switch SW1 indicates the dra w er is open. When the dra w er is closed, a plastic protrusion on[...]

EN Control panel messages 11 1 CLOSE UPPER REAR DRA WER Switch SW5 monitors the closing of the printer ’ s upper rear door (this door allows y ou to access the fusing assemb ly). When the fusing door is closed, a tab on the rear door pushes a door s witch actuator that runs along the left-side of the pr inter and closes SW5. 1. Close the upper re[...]

12 Chapter 1 Troubleshooting control panel messages EN CLOSE UPPER FR ONT DRA WER The dra wer that holds the imaging drum (the dr um dr aw er) is open. Switch SW3 indicates that the dra wer is open. When the dr a wer is closed, a plastic protrusion on the lower left corn er of the dr awer piv ots an ar m that allows SW3 to toggle to the open positi[...]

EN Control panel messages 13 1 CONTINUOUS P A GE PRESS CANCEL JOB (4500) The printer configuration page is being pr inted continuously . l Press [Cancel Job] to ter minate continuous configur ation page printing and retur n the pr inter to the READY state . Note The HP LaserJet 4550 P aper P ath test r uns f rom the Inf or mation Menu. D A T A RECE[...]

14 Chapter 1 Troubleshooting control panel messages EN DR UM LIFE LO W REPLA C E DR UM KIT (4500) -or- DR UM LIFE LO W ORDER DR UM KIT (4550) Appro ximately 80 percent of the drum ’ s lif e has been consumed. l Continue printing and order the dr um kit. Drum replacement will be required in the near future. DR UM LIFE OUT REPLA CE DRUM KIT The ima[...]

EN Control panel messages 15 1 FUSER LIFE LO W REPLA CE KIT (4500) -or- FUSER LIFE LO W ORDER KIT (4550) Appro ximately 95 percent of the fuser ’ s lif e has been consumed. l Continue printing, or replace the fuser kit. Fuser replacement will be required in the near future. FUSER LIFE OUT REPLA CE KIT The fuser has reached the end of its e xpecte[...]

16 Chapter 1 Troubleshooting control panel messages EN MEMOR Y SETTINGS CHANGED The I/O b uff er ing settings w ere changed by the printer because there is not enough memor y av ailable to use the pre vious settings . l No action required. How e v er , adding pr inter memor y might pre v ent this from occurring. MEMOR Y SHOR T A GE JOB CLEARED The [...]

EN Control panel messages 17 1 P A GE CANNO T PRINT NO W alter nates with RETR Y WHEN PRINTING ST OPS An inter nal page has been requested while the printer is pr inting an incoming job . Interrupting the job to print the inter nal page would corrupt the job ’ s environment and potentially cause the job to finish printing incorrectly after the in[...]

18 Chapter 1 Troubleshooting control panel messages EN PRINTING CALIBRA TION PA G E The color calibration page is being printed. The printer retur ns to the READY stage upon completion of this page. l No action is required. PRINTING CONFIGURA TION P A GE The configuration page is being printed. The pr inter retur ns to the READY stage upon completi[...]

EN Control panel messages 19 1 PRINTING LASERJET DEMO 2 (4500 only) The demo page is being printed. The pr inter retur ns to the READY state upon completion of this page. l No action is required. PRINTING A CCESSORIES The accessories page is being pr inted. The pr inter returns to the READY state upon completion of this page. l No action is require[...]

20 Chapter 1 Troubleshooting control panel messages EN REINST ALL TRANSFER BEL T This message occurs if y ou do not hav e the intermediate transf er belt installed in the printer or if the home position mar ks (on the ITB) are not detected b y sensor PS5. The ITB must be rotating bef ore PS5 is ab le to detect its “ home positioning ” mar ks . [...]

EN Control panel messages 21 1 REMO VE P APER T OP OUTPUT BIN The top output bin holds 250 sheets of paper . Sensor PS9 along with its sensor flag detects the height of the output paper stac k. P erf or m the action items if this message appears with no paper in the output bin. 1. V er ify that the PS9 sensor flag and arm mov e freely and its mov e[...]

22 Chapter 1 Troubleshooting control panel messages EN SELECT LANGU A GE The language selection pow er-up ke y sequence has been entered. The printer will prompt the user to select a new control panel displa y language once it has completed its initialization process. l Select a ne w language when prompted. SER VICE MODE The Ser vice Mode pow er-up[...]

EN Control panel messages 23 1 T ONER POSITION [COLOR] = [ST A TE] Indicates the current state of a par ticular toner car tr idge. This message appears when [Select] is pressed while a TONER LOW/OUT message appears. l If necessar y , replace the specified toner car tridge. TRANSFER KIT LO W REPLA C E KIT (4500) -or - TRANSFER KIT LO W ORDER KIT (45[...]

24 Chapter 1 Troubleshooting control panel messages EN TRA Y X SIZE [SIZE] Media has been loaded into the specified tra y . The most recently configured size will be displa yed with an asterisk next to it. Action: 1. [ – V alue +] might be used to view all possib le media sizes . 2. Pressing [Select] will select the currently displa y ed size . P[...]

EN Control panel messages 25 1 Numerical messages 13.XX Jam Note Ref er to the jam troub leshooting section f or the complete details about locating jams. XX Description: 4500 4550 0 1 J am in input f eed area 1 5 Jam in fusing area 2 6 Jam in fusing area 3 10 J am in duple x re v ersing unit 4 11 J am in duple x f eed unit 5 12 J am in duple x pap[...]

26 Chapter 1 Troubleshooting control panel messages EN 13.XX Jam alter nates with CHECK MIDDLE FR ONT DOORS Media is jammed in the transf er belt area or media is not pic king. 1 Open the ITB dra wer and remo v e any jammed media. 2 Chec k f or media between the tr ansf er roller and the fusing assemb ly . 13.XX Jam alter nates with CHECK FR ONT DU[...]

EN Control panel messages 27 1 13.1 Jam OPEN MIDDLE FR ONT DRA WER (4500) 13.5 Jam OPEN MIDDLE FR ONT DRA WER (4550) alter nates with CHECK IN REAR OF DRA WER A jam has occurred inside the ITB dra wer area. (The ITB dr a wer is also ref erred to as the middle front dr aw er f or end users.) The jam might be located in the fuser area or between the [...]

28 Chapter 1 Troubleshooting control panel messages EN 22 P ARALLEL I/O BUFFER O VERFLO W alter nates with PRESS GO T O CONTINUE Indicates the parallel b uff er has o v erflowed. 1. The current data in the print buff er will be lost. 2. Press [Go] to resume printing and then resend the job . 40 EIO X D A T A ERROR alter nates with PRESS GO T O CONT[...]

EN Control panel messages 29 1 41.5 UNEXPECTED P APER TYPE alter nates with CHECK P APER IN TRA Y X A tra y is configured f or a specific media type , b ut the printer detects a diff erent media type loaded. The most common cause f or this error is a jam at registration plate (under the ITB) where the customer does not remov e the paper . The engin[...]

30 Chapter 1 Troubleshooting control panel messages EN 49.ERR OR XXXX CYCLE PO WER (continued) Note The printer control panel will display 49 (FFFF) and the displa y will be dark if the r ibbon cab le is not connected. T o verify that the f or matter is functioning properl y , run the formatter tests a v ailable in the diagnostics mode . If the f o[...]

EN Control panel messages 31 1 49 04E7 (continued) Note This error is primar ily associated with the fir mware and should not require a ne w f or matter . 49 04FF A large print job (800 to 1200 pages) or complex g raphics can cause the printer to quit pr inting. T wo courses of actions are av ailable: l Deter mine the page that is causing the f ail[...]

32 Chapter 1 Troubleshooting control panel messages EN 49 04FF (continued) Putting the printer in Lossy mode might affect perf or mance and pr int quality . 49 FFFF Issue repor ted by lif e test when replacing the fuser . This error might also occur during the boot cycle. l Replace the f or matter . 49FFO X This error message allows y ou to scroll [...]

EN Control panel messages 33 1 50.x Fuser Err or (continued) X Description: 1 Low temper ature error 2 Fuser warm-up ser vice 3 High fuser temperature 4 F aulty fuser 5 Fuser v oltage mismatch (v er ify that y ou ha v e NO T installed a 110V fuser in a 220V printer or vice-v ersa). 6 Fuser heater cutoff 7 Fuser motor malfunction (see recommended ac[...]

34 Chapter 1 Troubleshooting control panel messages EN 50.7 FUSER ERR OR (continued) 4 If the error persists, Obser v e the drive shaft of M1 while po wering on the printer . If this shaft DOES NO T rotate, y our f a ilure is related to the motor drive circuitr y . Ref erring to the pr inter ’ s wiring diagr am, v erify that connectors J102 and J[...]

EN Control panel messages 35 1 52 SCANNER ERR OR (4550) -or - 52 PRINTER ERR OR (4550) Indicates that a scanner error has occurred. 1 T ur n the pr inter off and on to reset the printer . 2 V er ify connectors J551 on the beam detect PCB , J1103 on the scanner motor , and J1006 on the DC controller are fully seated and connected correctly . 3 Repla[...]

36 Chapter 1 Troubleshooting control panel messages EN 54.1 PRINTER ERR OR (continued) CA UTION 54.1 errors can be caused b y damaging the ther mistor while cleari ng fuser jams. 4 Mak e sure there is not a fluctuation in the pow er supply to the printer . Chec k that the electrical specifications are met. 5 Replace the low-v oltage po wer supply .[...]

EN Control panel messages 37 1 54.2 PRINTER ERR OR (continued) Note The printer CANNO T operate with the top co v er remov ed unless the carousel brak e has been released or remo v ed. 2 V er ify the carousel driv e motor wiri ng har ness is firmly seated into connector J203 of the de v eloping PCB . 3 V er ify PS10 is working correctly and not e x[...]

38 Chapter 1 Troubleshooting control panel messages EN control ar m of the imaging drum dra wer to J1010 of the DC controller PCB. V er ify that the cable is firmly seated into the J1010 of the DC controller PCB . 3 If the error persists, replace the density sensor assemb ly . 54.4 PRINTER ERR OR Optional equipment is not recognized. l T ur n the p[...]

EN Control panel messages 39 1 54.6 PRINTER ERR OR (continued) 4 If the error persists, v erify that all connectors are fir mly seated. 5 Replace ITB dra wer . 55 DC CONTR OLLER ERROR The print engine is not communicating with the f or matter . The communication link between the f or matter and DC controller was lost. This can occur due to a timing[...]

40 Chapter 1 Troubleshooting control panel messages EN 57.2 F AN F AILURE The printer detected that the fan (an e xhaust f an located in the upper , right rear cor ner of the pr inter) w as not rotating. This f an, operates off +24Vdc and is enab led by the DC controller PCB ’ s micro-processor . 1 T ur n the pr inter off and on to reset the prin[...]

EN Control panel messages 41 1 62 NO SYSTEM Indicates there is a printer fir mware prob lem. Either there is no fir mw are DIMM installed or the DIMM has f ailed. If the f or matter w as just replaced, mak e sure all DIMMs hav e been mo v ed from the old f or matter to the ne w one. 1 T ur n the pr inter off and on to reset the printer . 2 Reseat t[...]

42 Chapter 1 Troubleshooting control panel messages EN 68 NVRAM FULL CHECK SETTINGS Indicates that a non-v olatile storage de vice is full. Some settings might ha v e been reset to f actor y def aults. 1 Chec k pr inter settings to determ ine which v alues ha v e been changed. 2 Clear the message b y pressing [Go] . 79 SER VICE (XXXX) PRINTER ERR O[...]

EN Troubleshooting paper path problems 43 1 T r oub leshooting paper path pr ob lems P aper jams P aper jams are posted if paper f ails to arriv e at or clear the paper path sensors in the allow ed time. Dedicated paper sensors (PS2, PS7, PS3101, PS3103, and PS3104) detect whether paper is present in the sensor and if the paper is f ed nor mally (s[...]

44 Chapter 1 Troubleshooting control panel messages EN P aper jam sensors 1 Registration paper sensor (PS2) 2 Duple x paper-pick sensor (PS3104) 3 Re v ersed unit paper sensor (PS3103) 4 Re v ersed paper sensor (PS3101) 5 Deliv er y paper sensor (PS7) www.GovTechMedia.com[...]

EN Troubleshooting paper path problems 45 1 P aper jam locations Use the figure below to troub leshoot paper jams in the printer . F o r instructions on clear ing paper jams, see the sections later in this chapter . P aper jam locations (sho wn with the optional 500-sheet paper f eeder and duple x unit installed) See the ne xt page f or the associa[...]

46 Chapter 1 Troubleshooting control panel messages EN T able 1-1 4500 Jam locations and associated err or messages 1 13.11 P aper in the paper path is too long. Check the T ra y 1 area. Check the entire paper path. 8 13.3 Ja m in duple x re verse unit. Inspect the rear of the duple x unit and the duple x tra y . 2 13.10 P aper in the paper path is[...]

EN Troubleshooting paper path problems 47 1 T able 1-2 4550 Jam locations and associated err or messages 1 13.25 P aper in the paper path is too long. Check the T ra y 1 area. Check the entire paper path. 8 13.10 J am in duplex rev erse unit. Inspect the rear of the duple x unit and the duple x tra y . 2 13.24 P aper in the paper path is too shor t[...]

48 Chapter 1 Troubleshooting control panel messages EN General paper path ch ec klist • V er ify that media is correctly loaded in the input tr a ys and that all length and width guides are set correctly . • Clean the printer . T oner and paper dust in the paper path inhibits free mo v ement of media through the pr inter and b loc ks the sensor[...]

EN Troubleshooting paper path problems 49 1 Print media chec klist Many print prob lems are caused by printing on media that does not meet specifications. See “ Suppor ted media weights and siz es ” on page 90 and the HP LaserJet Printer F amily Print Media Guide fo r detailed inf or m ation about media specifications . In addition, the f ollow[...]

50 Chapter 1 Troubleshooting control panel messages EN www.GovTechMedia.com[...]

EN Overview 51 2 Ser vice tools Overview This chapter provides inf ormation on ser vice tools that ser v ice personnel can use to v erify and manipulate inter nal pr inter settings and diagnostics. Note Only authorized ser vice personnel should use the ser vice mode. www.GovTechMedia.com[...]

52 Chapter 2 Service tools EN Cold Reset Cold reset clears all data from the print buff er and returns the pr inting menu and the configur ation menu to the f actor y def ault settings . T o perf orm a cold reset Select RESTORE FACTORY DEFAULTS from the Reset men u f or the HP LaserJet 4500 series Select RESTORE FACTORY SETTINGS from the Reset men [...]

EN Service mode 53 2 Service mode menu map Ser vice menu Seria l number= T ransfer main t count= Fuser maint count= Color page count= To t a l p a g e count= Cold reset paper= Clear ev ent log Cyan registration= Magenta registration= Y el low registration= To p m a r g i n = Tr a y 1 left margin= Tr a y s 2 a n d 3 left margin=* Prin t registr ’ [...]

54 Chapter 2 Service tools EN Service menu items The Ser vice menu pro vides the options listed below . Press the I TEM ke y to scroll through the Ser vice men u. • Serial number • T ransf er maintenance count • Fuser maintenance count • Color page count • T otal page count • Registration page (see page 55) • Diagnostics mode (see pag[...]

EN Service mode 55 2 Registration page Note Y ou m ust set the registration v alues if both the f ormatter and DC controller are replaced at the same time or if the f or matter was pre viously installed in another pr inter . If the DC controller is replaced b y itself , these v alues are copied from the f ormatter to the DC controller . If a new f [...]

56 Chapter 2 Service tools EN Registration page www.GovTechMedia.com[...]

EN Service mode 57 2 Setting registration number s On each of the color bars in the process section are bolded numbers that indicate the current number set on the control panel. These bolded numbers will alw a ys be in the middle of the bars. T o set the correct v alue f or each of the colors, look at the lines within the bar and find the grouping [...]

58 Chapter 2 Service tools EN The left-side margin setting is tra y dependent. T ra y 1 has its o wn number while T ra ys 2 and 3 are combined. The procedure is the same as the top margin with one e xception. The page must be printed from the tra y that will be adjusted. Printing fr om T ray 1: 1 Press the I TEM k ey until PRINT REGISTRATION PAGE T[...]

EN Diagnostics mode 59 2 Diagnostics mode This section provides an o v er vie w of the diagnostic tools incor porated into the HP Color LaserJet 4500 series and 4550 ser ies printers. CA UTION Use caution when perf or ming printer diagnostics to av oid risk of injur y . Only trained serv ice personnel should access the diagnostic mode with the skin[...]

60 Chapter 2 Service tools EN Formatter diagnostics F or matter diagnostics are designed to be used b y qualified ser vice personnel. This set of tests are designed to thoroughly test the functionality of the f or matter . If all the tests pass, the f or matter is working correctly and it is likely that the prob lem resides else where. Listed below[...]

EN Diagnostics mode 61 2 Formatter diagnostics T est Description REPEA T If set to yes , the tests will run continuously until interrupted. In the 4550 series only , [C ANCEL J OB ] will abor t the test. ON F A UL T The f ollo wing will occur f or each setting: BREAK – The test will stop when a f ailure occurs . P A USE – Stops the test f or a [...]

62 Chapter 2 Service tools EN Engine diagnostics A good understanding of how the printer operates is required to use the engine diagnostics successfully . T o hav e a better vie w of the areas being e x ercised, remov e the left-side cov er and the ITB dr aw er . Defeat the tw o ITB dra wer s witches located on the left side of the dra wer ca vity [...]

EN Diagnostics mode 63 2 P aper path test Note If an error occurs during the paper path test, the message PATH_1PAPER PATH TEST FAILED displa ys . 1 Press the I TEM k e y until y ou see ENGINE DIAGS PAPER PATH TEST . 2 Press the S ELECT k e y to activ ate the test. While the test is r unning ENGINE DIAGS E1:PAPERPATH displa ys in the front panel. T[...]

64 Chapter 2 Service tools EN Developer test The de v eloper test rotates the carousel stopping at each toner car tridge and rotating the de v eloper slee v e . F or the best vie w of the carousel and the toner car tr idge slee v es , remov e the drum car tr idge. The drum dra wer m ust be closed bef ore the test can r un. 1 Press the I TEM k ey un[...]

EN Diagnostics mode 65 2 P ath sensor s The path sensors test allows the paper path sensors and s witches to be tested f or correct operation. The tab le belo w shows the correlation between the identifier on the f ront panel and the sensor or s witch it represents. 1 Press the I TEM k e y until ENGINE DIAGS PATH SENSORS is displa y ed on the front[...]

66 Chapter 2 Service tools EN When running this test, make sure the ITB dra wer is installed with T ra y 2 and T ra y 3 (if installed) remo v ed. In this state, the def ault v alue on the front panel should be: 0X111111110010, where the x can be either 0 or 1 . If there is any other v alue , then there is a possib le prob lem. Identify the sensor o[...]

EN Diagnostics mode 67 2 Door sensor test The door sensor test allows service personnel to open and close doors on the printer while watching the sensor status on the front panel. Switches 4 and 5 are in series with each other , which causes the v alue to toggle under identifier A. Once the door sensor test is initiated, the front panel displa ys t[...]

68 Chapter 2 Service tools EN Engine test The printer has one test patter n (ver tical lines). When an image def ect appears, a test print can be made to identify the problem. The test print can be made b y pressing the test pr int switch located on the right side of the printer (see figure below). A test patter n can be printed by pressing the tes[...]

EN NVRAM initialization 69 2 NVRAM initialization NVRAM initialization should alwa ys be ex ecuted immediately after replacing the fir mware or the f or matter board. This procedure aligns the fir mware with the f or matter . Not perf or ming NVRAM initialization could result in deterioration of pr int quality . Bef ore initializing NVRAM, be sure [...]

70 Chapter 2 Service tools EN • Printer ser ial number www.GovTechMedia.com[...]

EN Overview 71 3 P o w er supply Overview Three pow er supplies are used to po we r v arious sections of the pr inter: A C , DC , and a high-v oltage po wer supply . This chapter details the distribution of these po wer supplies . www.GovTechMedia.com[...]

72 Chapter 3 Power supply EN A C/DC power suppl y The low-v oltage po wer supply circuit supplies +24 Vdc and +5 Vdc , which is required f or the pr inter , and 3.3 and 5 Vdc, which is required f or the video controller . +24 Vdc • The paper pic kup motor , scanner motor , and high-voltage po wer supply PCB use +24 Vdc. • The front door s witch[...]

EN Overcurrent/overvoltage protection 73 3 Over current/o verv oltage pr otection Each DC pow er supply circuit has an ov ercurrent protectiv e function and ov er v oltage protectiv e function. This pre v ents a pow er supply circuit f ailure b y automatically interrupting the output voltage when anomalies such as a shor t de velop on the loads tha[...]

74 Chapter 3 Power supply EN High-v oltage po wer suppl y The printer contains two high-v oltage PCBs mounted in one assembly . T ogether these PCBs generate the voltage supplied to the f ollowing: • primar y charging roller • de v eloping slee v e • primar y transf er roller • secondar y transf er roller • ITB cleaning roller • upper f[...]

EN Overview 75 4 Input/Output (I/O) Overview This chapter provides inf ormation on cabling and the printer interf ace. www.GovTechMedia.com[...]

76 Chapter 4 Input/Output (I/O) EN Enhanced I/O (EIO) configuration Both 4500 series and 4550 ser ies printers come equipped with two enhanced input/output (EIO) slots. These slots hold compatib le e xter nal de vices such as the HP JetDirect 600N Print Ser ver . Plugging EIO cards into the slots increases the number of network interf aces a v aila[...]

EN HP JetDirect print servers 77 4 HP JetDirect print servers HP JetDirect print ser vers (netw or k cards) can be installed in one of the printer EIO slots. These cards suppor t multiple network protocols and operating systems . HP JetDirect pr int ser v ers f acilitate netw or k management b y allowing y ou to connect a pr inter directly to your [...]

78 Chapter 4 Input/Output (I/O) EN LocalT alk I/O The LocalT alk interface enab les y ou to print directly from a standalone Apple Macintosh computer or from a Macintosh computer on a LocalT alk networ k. F or specific inf ormation on configur ing y our computer and printer to pr int through a LocalT alk interface , ref er to the printer ’ s gett[...]

EN Fast InfraRed Receiver (optional) 79 4 • Microsoft Windows 9x, Windo ws NT 4.0, Windo ws 2000 or Mac 8.5 with a LaserWriter 8.6 or higher dr iv er . Note Older non-IrD A-compliant por tab le computers might not be compatib le with the HP F ast Inf raRed Receiv er . If you e xperience prob lems when attempting to pr int with the HP F ast InfraR[...]

80 Chapter 4 Input/Output (I/O) EN Bidirectional parallel interface When used to describe a parallel interf ace, the term bidirectional indicates that the printer is able to both receiv e data f rom the computer and send data to the computer through the parallel por t. An IEEE-1284 compliant parallel cab le with the correct pin configuration (see t[...]

EN Bidirectional parallel interface 81 4 P arallel cab le pin configuration Use the f ollowing tab le to v erify the correct pin configuration. Signal name Printer pin # Computer por t # nSTR OBE 15 1 DA T A 0 62 DA T A 1 7 3 DA T A 2 8 4 DA T A 3 9 5 DA T A 4 1 0 6 DA T A 5 11 7 DA T A 6 1 2 8 DA T A 7 13 9 nA CKNLG 3 10 BUS Y 1 11 CALL (PE) 5 12 [...]

82 Chapter 4 Input/Output (I/O) EN IEEE-1284 compliant parallel cables HP helped de v elop the IEEE-1284 standard and is one of the first companies to introduce products that are compliant with it. HP off ers the f ollowing IEEE-1284 compliant par allel cab les. Each is described below . Maxim um I/O cab le lengths P ar t number Length Connector ty[...]

EN Configuring the computer interface 83 4 Configuring the computer interface Y ou can v erify that the pr inter is configured properly by printing out a printer configuration page. Note If the printer is configured with EIO cards (for e x ample , an HP JetDirect print ser ver), an additional configur ation page will print that provides interf ace [...]

84 Chapter 4 Input/Output (I/O) EN 1 Printer inf ormation — Lists the pr inter serial number , PCL/Emulated P ostScr ipt fir mw are re vision, total number of pages printed dur ing the lif e of the printer , and total number of color pages printed during the lif e of the printer . 2 Event log — Lists the last fiv e printer ev ents , including p[...]

EN Configuring the computer interface 85 4 13 Printer usage information — (4500 series only; 4550 series usage inf or mation is on the Usage P age) Shows the number of pages printed for the f ollo wing items: Row 1: P a per siz e 000000 000000 000000 000000 000000 Custom En v elope Legal Ex ecutiv e/B5 Letter/A4 Row 2: Fuse modes 000000 000000 00[...]

86 Chapter 4 Input/Output (I/O) EN 14 Calibration density settings — On the bottom row of te xt, there are f our separate b loc ks of numbers . The first b lock is f o r cyan, second f or magenta, third f or y ellow , and the last is f or b lac k. Mak e sure the numbers are not near z ero (if so , no calibration w as done). Note F or ro ws one to[...]

EN Configuring the computer interface 87 4 Note F or ro ws one to three, the page count is incremented after e ver y ten pages. Ro w f our is incremented after e v er y end of page . Rows one to f our are counted through the engine . Rows fiv e and six are driver requests. The tra y count is incremented based on the tr a y that is selected by the f[...]

88 Chapter 4 Input/Output (I/O) EN www.GovTechMedia.com[...]

EN Overview 89 Overview Use media that meet the specifications listed on the following pages. By doing so, you will minimize the incidents of p aper jams, prevent premature wear to the printer , and reduce repair cost s. Hewlett-Packard recommends testing print media before buying it in large quantities. Note For complete paper specifications for a[...]

90 Chapter 5 Media specifications EN Supported media weight s and sizes The table below shows the media types and sizes supported by the printer and the printer accessories. For optimum results, use conventional 75 g/m 2 (20 lb) xerographic paper . Supported media specifications T ray Supported media Media specifications Cap acity Tr a y 1 Paper A4[...]

EN Supported media weights and sizes 91 5 *T rays 2 and 3 do not support the range of custom sizes available in T ray 1. **T rays 2 and 3 use “custom” size—specifically for B5 ISO. Note Use only HP-supported transparencies (HP p art number C2934A, letter size; C2936A, A4 size). T ray 2* Paper A4/Letter Legal Executive JIS B5 A5 Custom (B5 ISO[...]

92 Chapter 5 Media specifications EN Media requirement s Selecting print media Y ou can use many types of p aper and other print media with the HP Color LaserJet printers. This section provides guidelines and specifications for selecting and using dif ferent print media. For optimum results, use conventional 75 g/m 2 (20 lb) xerographic paper . V e[...]

EN Media requirements 93 5 Non-supported media Use the following guidelines to avoid poor print quality or damage to your printer: • Do not use paper that is too rough. • Do not use paper that is embossed or coated unless it is specifically recommended for use in the HP Color LaserJet printers. • Do not use paper with cutout s or perforations[...]

94 Chapter 5 Media specifications EN T ransp arencies Note Hewlett-Packard recommends using HP Color LaserJet T ransp arencies with this printer . HP products are designed to work together for optimum printing results. When printing on transparencies, use these tip s to prevent printer malfunctions caused by transparencies: • Use letter-size and [...]

EN Media requirements 95 5 Glossy p aper For optimum results when printing on glossy p aper , select the glossy print setting in the printer driver . Y ou can also use the printer control panel to set the media type to GLOSS for the input tray you are using. Because this setting affect s all print jobs, it is important to return the printer to its [...]

96 Chapter 5 Media specifications EN Envelopes Envelopes can only be printed from T ray 1. For information on loading envelopes, see the section in the online user guide on loading envelopes into T ray 1. Adhering to the following guidelines will help ensure proper printing of envelopes and help prevent printer jams: • Do not load more than 10 en[...]

EN Media requirements 97 5 Labels Note T o print labels, Hewlett-Packard recommends configuring T ray 1 as a cassette and setting the tray’ s media type to LABELS in the printer control panel. When printing labels, use the following guidelines: • V erify that the label’s adhesive material can tolerate temperatures of 190° C (374° F) for 0.1[...]

98 Chapter 5 Media specifications EN Recycled p aper This printer supports the use of recycled p aper . Recycled paper must meet the same specifications as standard p aper (refer to the HP LaserJet Family Print Media Guide ). The guide is available through HP Direct. See Appendix D in the online user guide for ordering information. Hewlett-Packard [...]

EN General tips 99 5 General tip s Paper curl Paper curl results from both the heating process used to bond the print image (toner) to the paper and from the p ath that the paper must negotiate through the printer . T ake the following actions to help reduce paper curl: 1 T urn the p aper over in the input tray . Some paper packages (reams) have an[...]

100 Chapter 5 Media specifications EN www.GovTechMedia.com[...]

EN Overview 101 Overview This chapter provides information on toner cartridges and their use. Hewlett-Packard recommends using HP toner cartridges, which are designed specifically to enhance the output from the HP LaserJet family of printers. www.GovTechMedia.com[...]

102 Chapter 6 Toner cartridge information EN Approximate replacement intervals for consumable items Y ou can identify consumable items by their labeling and their blue plastic handles. For instructions on installing consumables, see the installation guides supplied with each consumable item. The following table list s the replacement intervals for [...]

EN Approximate replacement intervals for consumable items 103 6 1 The approximate average A4/letter-size page count is based on 5 percent coverage of individual toner colors. Page counts are only estimations; usage conditions and print patterns can cause results to vary. 2 Approximate lives are based on 2,000 pages per month. CAUTION Hewlett-Packar[...]

104 Chapter 6 Toner cartridge information EN Potential toner cartridge issues Banding When printing with a laser printer , the toner is applied across the page in horizontal strip s. The page is moved through the printer and toner is continually applied. When printing text- or black-image pages, a large amount of toner is deposited on the page. As [...]

EN Potential toner cartridge issues 105 6 T oner cracking When the paper is folded and the crease aligns with a line of text, it is possible with certain types of p aper for the text to break along the line, giving the appearance of a white line through the text. Papers that do not meet the smoothness (100-250 Sheffield, 100-500 Bend tsen) or wax p[...]

106 Chapter 6 Toner cartridge information EN T ransfer of toner image (post-image transfer) After printing a document on a HP LaserJet printer , folding it, and sending it through the mail, you might observe that a portion of the print image was transferred to opposing surfaces of the folded document. The laser printing process uses a pigmented pla[...]

EN Potential toner cartridge issues 107 6 HP LaserJet printers have been designed for optimum results with xerographic (laser) bond papers such as HP Multipurpose p aper . The properties of this type of paper (for example, surface roughness, composition, and moisture content) are such that the other causes of potential toner transfer are minimized.[...]

108 Chapter 6 Toner cartridge information EN HP Planet Partners The U. S., Canada, Europe, and Australia now have HP toner cartridge recycling programs. The used toner cartridge should be placed in the wrapper and box that held the new cartridge and sent back for recycling. HP Planet Partners U.S. A brochure explaining the recycling program in the [...]

EN HP Planet Partners 109 6 Note Recycling information is included in the toner cartridge package. For additional information about HP corporate-wide, environmental policies, practices, and awards, visit www .hp.com . CANADA Canada uses Federal Express for their recycling program. At least eight but no more than 40 T oner Cartridges can be shipped [...]

11 0 Chapter 6 Toner cartridge information EN T oner cartridge refill st atement Hewlett-Packard toner cartridges have been designed to maximize the reliability of the HP LaserJet printer by including all of the components that need frequent replacement or adjustment within the cartridge. While we recognize that all part s of this critical printer [...]

EN Toner cartridge refill statement 111 6 The entire family of HP LaserJet printers is covered under a standard one-year warranty from the date of purchase. Hewlett-Packard of fers optional maintenance contracts after the one-year warranty expires. The use of refilled toner cartridges alone does not af fect either the warranty or any maintenance co[...]

11 2 Chapter 6 Toner cartridge information EN www.GovTechMedia.com[...]

EN Overview 11 3 Overview The following tables list the product s, product numbers, product descriptions, and service part numbers for each printer . Parts can be ordered through HP Parts Direct Ordering at (800) 227-8164 (U.S. only). For additional product support, see the inside back cover of this guide. www.GovTechMedia.com[...]

11 4 Chapter 7 Printer options and consumables EN Identifying consumables The following illustrations show the location of the consumables. Consumable locations * * See “Approximate replacement intervals for consumable items” on page 102. 1 T oner cartridges 4 T ransfer roller 2 Imaging drum cartridge 5 Air filters 3 Intermediate transfer belt [...]

EN Printer options and replaceable parts 11 5 7 Printer options and replaceable p art s Printer options and replaceable p art s Product Product number Product description 4500 p art number 4550 p art number Memory 100-pin C4140A 4 MB SDRAM DIMM C4140-67901 C4141A 8 MB SDRAM DIMM C4141-67901 C4142A 16 MB SDRAM DIMM C4142-67901 C4143A 32 MB SDRAM DIM[...]

11 6 Chapter 7 Printer options and consumables EN Network connectivity J31 10A HP JetDirect 600N for ethernet (10Base-T [RJ-45]) J31 10-69001 J31 10-69001 J31 1 1 A HP JetDirect 600N for ethernet (10Base-T [RJ-45] and 10Base-2 [BNC]) and LocalT alk (DIN-8) J31 1 1 -69001 J31 1 1-69001 J31 12A HP JetDirect 600N for T oken Ring (DB9, RJ- 45) J31 12-6[...]

EN Printer options and replaceable parts 11 7 7 Options C4082A 500-sheet input tray C4082-67901 C4082-67901 C4083A Duplex unit (two- sided printing) C4083-67901 C4083-67901 C4235A HP Color LaserJet 4500/4550 cabinet N/A N/A J6054A 5 GB Hard Disk (4550 series only) N/A N/A J4103A Fast Infrared Pod (4550 series only) N/A N/A C4286A Flash DIMM (4550 s[...]

11 8 Chapter 7 Printer options and consumables EN Consumables C4195A Drum kit R94-4001- 410CN R94-4001- 410CN C4196A T ransfer kit R96-5009- 000CN R96-5009- 000CN C4197A Fuser kit (1 10V) R96-5007- 000CN R96-5007- 000CN C4198A Fuser kit (220V) R96-5008- 000CN R96-5008- 000CN Panel overlays N/A English C4084-40001 C4084-40001 N/A German C4084-40005 [...]

EN Overview 11 9 Overview This chapter provides the part numbers and descriptions of the most commonly used assemblies and subassemblies in the HP LaserJet color printers. The shaded numbers in the tables refer to the location of the part in the printer , as shown in the corresponding illustrations. www.GovTechMedia.com[...]

120 Chapter 8 Printer parts EN Common fasteners Illustration Description S ize Uses Screw , machine w/washer M3X6 M3X10 M3X12 M3X14 T o hold plastic to metal example: the skins Screw , self- tapping M4X8 M4X10 T o hold plastic to plastic example: control panel Screw , trus head M3X4 M3X6 M3X8 Sheet metal to sheet metal example: formatter pan Retain[...]

EN Parts lists and illustrations 121 8 Part s list s and illustrations The following illustrations and their respective part s tables list the field replaceable units (FRU) for this printer . Each table includes the name of the part (description), p art number , quantity , and reference number pointing to the part and location in the illustration. [...]

122 Chapter 8 Printer parts EN Part s for the HP LaserJet 4500 series External covers, p anels, etc. 1 2 3 4 5 6 7 8 9 10 12 11 www.GovTechMedia.com[...]

EN Parts lists and illustrations 123 8 Note Early CLJ4500 printers (serial numbers xxGxxxxxxx and below) have two versions of the drum drawer cover and the upper (drum) drawer Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Cover , right side 1 RB2-1203- 000CN RB2-1203- 000CN RB2-1203- 000CN[...]

124 Chapter 8 Printer parts EN assembly . If the drum drawer cover requires replacement, first determine whether you have the original version of the drum drawer by locating a bar code label with a part number of RG5-3315 on the inside of the drum drawer cover , just to the right of the fan cover . If you have the original version of the drum drawe[...]

EN Parts lists and illustrations 125 8 T op cover assembly Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Cover , top 1 RG5-3300- 000CN RG5-5150- 000CN RG5-5150- 000CN 2 Cover , toner access 1 RF5-2076- 000CN RF5-3137- 000CN RF5-3137- 000CN 1 2 www.GovTechMedia.com[...]

126 Chapter 8 Printer parts EN CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. Before ordering part s, you will need to identify which printer version you are servicing. For more information, see page 121. 4 2 1 3 9 6 5 7 8 10 11 12 13 15 16 14 17 18 www.GovTechMedia.com[...]

EN Parts lists and illustrations 127 8 Internal component s (1 of 3) Internal component s (1 of 3) Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Cable, fan 1 RG5-3887- 000CN N/A N/A 2 Cable, developer 1 RG5-3783- 000CN RG5-5187- 000CN RG5-5187- 000CN 3 Power supply , 1 10V 1 RH3-2189- 000C[...]

128 Chapter 8 Printer parts EN 11 Fu s er , 2 20 V 1 RG5-3251- 000CN C4084- 69003* RG5-3251- 000CN C4084- 69003* RG5-5155- 050CN C4084- 69003* 12 Kit, Fuser Deflector 1 C4084-67906 C4084-67906 C4084-67906 13 Drum bushing assembly 1 RG5-5169- 000CN RG5-5169- 000CN RG5-5169- 000CN 14 Rod, delivery 1 RB2-1284- 000CN RB2-1284- 000CN RB2-1284- 000CN 15 [...]

EN Parts lists and illustrations 129 8 Internal component s (2 of 3 1 3 4 2 7 5 6 www.GovTechMedia.com[...]

130 Chapter 8 Printer parts EN CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more information, see[...]

EN Parts lists and illustrations 131 8 Internal component s (3 of 3) 1 2 12 13 11 10 9 4 5 6 8 14 3 -A 14 -B 7 (SW3) www.GovTechMedia.com[...]

132 Chapter 8 Printer parts EN Internal component s (3 of 3) Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Guide, drum drawer cable 1 RB2-1457- 000CN (included in 14B) (included in 14B) 2 Sensor , waste toner (PS13) 1 RG5-3292- 000CN RG5-3292- 000CN RG5-3292- 000CN 3 DC controller PCB 1 RG[...]

EN Parts lists and illustrations 133 8 CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more informat[...]

134 Chapter 8 Printer parts EN Developing carousel assembly Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Fan, large 1 RH7-1346- 000CN RH7-1435- 000CN RH7-1435- 000CN 2 Spacer 1 RS5-6210- 000CN RS5-6210- 000CN RS5-6210- 000CN 3 Bearing, carousel 1 XG9-0361- 000CN XG9-0361- 000CN XG9-0361- [...]

EN Parts lists and illustrations 135 8 CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more informat[...]

136 Chapter 8 Printer parts EN PCB assemblies PCB assemblies Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Developing PCB 1 RG5-381 1- 000CN RG5-5180- 000CN RG5-5180- 000CN 2 DC controller PCB 1 RG5-3809- 000CN RG5-5254- 000CN RG5-5254- 000CN 3 Interconnect PCB 1 RG5-3808- 000CN RG5-3808- [...]

EN Parts lists and illustrations 137 8 *These part s require exchange CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you a[...]

138 Chapter 8 Printer parts EN Paper pick-up assembly (1 of 3) 2 1 5 4 3 www.GovTechMedia.com[...]

EN Parts lists and illustrations 139 8 CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more informat[...]

140 Chapter 8 Printer parts EN Paper pick-up assembly (2 of 3) 2 3 6 9 10 13 19 16 15 17 20 21 22 25 27 28 7 8 11 12 14 18 23 24 26 29 30 31 1 4 5 32 33 34 35 www.GovTechMedia.com[...]

EN Parts lists and illustrations 141 8 CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more informat[...]

142 Chapter 8 Printer parts EN 12 Bushing 2 RS5-1293- 000CN RS5-1293- 000CN RS5-1293- 000CN 13 Gear , 31 T 1 RS6-0136- 000CN RS6-0136- 000CN RS6-0136- 000CN 14 Motor (M2), stepping 1 RH7-1343- 000CN RH7-1343- 000CN RH7-1343- 000CN 15 Gear , 47T 1 RS6-0147- 000CN RS6-0147- 000CN RS6-0147- 000CN 16 Gear , 24T/37T 1 RS6-0163- 000CN RS6-0163- 000CN RS6[...]

EN Parts lists and illustrations 143 8 25 Gear , 26T 1 RS6-0149- 000CN RS6-0149- 000CN RS6-0149- 000CN 26 Gear , 37T 1 RS6-0143- 000CN RS6-0143- 000CN RS6-0143- 000CN 27 Sensor , paper size 1 RG5-3234- 000CN RG5-3234- 000CN RG5-3234- 000CN 28 Cable, paper feed 1 RG5-3785- 000CN RG5-3785- 000CN RG5-3785- 000CN 29 Gear , 29T 1 RS6-0150- 000CN RS6-015[...]

144 Chapter 8 Printer parts EN Paper pick-up assembly (3 of 3) 1 2 3 5 7 20 22 23 25 24 26 27 6 4 8 9 10 11 12 13 14 15 16 17 18 19 21 28 33 32 29 30 30 31 www.GovTechMedia.com[...]

EN Parts lists and illustrations 145 8 Paper pick-up assembly (3 of 3) Ref Description Qty Part s for 4500 s/n xxG and below Part s for 4500 s/n xxH and above Part s for 4550 1 Cable, fusing/ option 1 RG5-3787- 000CN RG5-3787- 000CN RG5-3787- 000CN 2 Lever , sensor 1 RB2-0576- 000CN RB2-0576- 000CN RB2-0576- 000CN 3 Clutch, one- way 1 RB2-0572- 000[...]

146 Chapter 8 Printer parts EN 14 Clutch (CL4), electromagneti c 1 RH7-5180- 000CN RH7-5180- 000CN RH7-5180- 000CN 15 Gear , 16T 1 RS6-0151- 000CN RS6-0151- 000CN RS6-0151- 000CN 16 Clutch (CL3), electromagneti c 1 RH7-5178- 000CN RH7-5178- 000CN RH7-5178- 000CN 17 Gear , 29T 1 RS6-0152- 000CN RS6-0152- 000CN RS6-0152- 000CN 18 Paper feed PCB assem[...]

EN Parts lists and illustrations 147 8 CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing. For more informat[...]

148 Chapter 8 Printer parts EN Alphabetical p art s list CAUTION T wo versions of the HP Color LaserJet 4500 series printers are available. The 4550 series printer is similar to the newer version of the 4500 printer , but does contain some new service pa rts. Before ordering part s, you will need to identify which printer version you are servicing.[...]

EN Alphabetical parts list 149 8 Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Cable, ITB RG5-3786- 000CN RG5-3786- 000CN RG5-3786- 000CN Cable, ITB switch RG5-4651- 000CN RG5-4651- 000CN RG5-4651- 000CN Cable, laser RG5-3782- 000CN RG5-3782- 000CN RG5-3782- [...]

150 Chapter 8 Printer parts EN Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Continuous toner level sensor PCB N/A N/A RG5-5247- 000CN Control panel assembly RG5-3345- 000CN RG5-3345- 000CN RG5-3345- 000CN Cover , cable RB2-1 180-000CN RB2-1 180-000CN RB2-1 1[...]

EN Alphabetical parts list 151 8 Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Drum bushing assembly RG5-3319- 000CN RG5-3319- 000CN RG5-3319- 000CN Drum drawer assembly RG5-5230- 000CN RG5-5142- 000CN RG5-5142- 000CN Drum drawer assembly RG5-5230- 000CN RG5-[...]

152 Chapter 8 Printer parts EN Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Gear , 18T/14T RS6-0157-000CN RS6-0157-000CN RS6-0157-000CN Gear , 18T/52T RF5-2161-000CN RF5-2161-000CN RF5-2161-000CN Gear , 19T RS6-0141-000CN RS6-0141-000CN RS6-0141-000CN Gear ,[...]

EN Alphabetical parts list 153 8 Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer ICL cam assembly RG5-3242- 000CN RG5-3242- 000CN RG5-3242- 000CN Indicator , paper level RB1-9009-000CN RB1-9009-000CN RB1-9009-000CN Interconnect PCB RG5-3808- 000CN RG5-3808- 000[...]

154 Chapter 8 Printer parts EN Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Paper size sensor PCB RG5-3816- 000CN RG5-3816- 000CN RG5-3816- 000CN Plate, left RF5-2094-000CN RF5-2094-000CN RF5-2094-000CN Plate, right RF5-2095-000CN RF5-2095-000CN RF5-2095-000[...]

EN Alphabetical parts list 155 8 *These part s require exchange Description Part s for 4500 series xx G ... and below Part s for 4500 series xx H... and above Part s for HP Color LaserJet 4550 printer Sensor (PS14), density RG5-3281- 000CN RG5-5149- 000CN RG5-5149- 000CN Sensor , paper size RG5-3234- 000CN RG5-3234- 000CN RG5-3234- 000CN Shaft, pap[...]

156 Chapter 8 Printer parts EN www.GovTechMedia.com[...]

EN Overview 157 Overview This chapter includes information on the following topics: • The printer cleaning page • Image formation troubleshooting • Examples of image defects and recommended corrective actions • Overhead transparency defect troubleshooting • Repetitive defect troubleshooting www.GovTechMedia.com[...]

158 Chapter 9 Image quality EN Image formation troubleshooting Before beginning image formation troubleshooting, check that the media meets the specifications listed in the HP Laser Jet Printer Family Print Media Guide. Print density test and color checks Use the configuration page to check the print density of the black, primary , and process colo[...]

EN Image formation troubleshooting 159 9 Common causes of color variation The following list outlines the major causes of color variations between computers, applications, and output devices. • Halftone patterns produced on monitors and the types of p atterns used in the print jobs are dif ferent and might cause variations in the printed output. [...]

160 Chapter 9 Image quality EN Color selection process The user selects the color in the application, but the operating system might convert or modify some characteristics of the color before sending the information to the printer driver . The printer driver might also modify color characteristics depending upon the selected output mode. Any color [...]

EN Image formation troubleshooting 161 9 HP ColorSmart II HP ColorSmart II is a set of technologies that enables optimal color output automatically for diverse types of documents. HP ColorSmart II utilizes object tagging and S t andard RGB (sRGB) color technologies. Object tagging allows optimal color and halftone settings to be used for dif ferent[...]

162 Chapter 9 Image quality EN Matching colors The process of matching printer output color to your monitor is quite complex because printers and computer monitors use different methods of producing color . Monitors display colors by light pixels using an RGB (red, green, blue) color process, but printers print colors using a CMYK (cyan, magenta, y[...]

EN Image formation troubleshooting 163 9 For more information about using P ANTONE®* colors, see the Readme file for the P ANTONE® color-matching system included on the printing system CD-ROM. Note Color settings, halftone settings, and print media af fect the appearance of P ANTONE®* colors. T o optimize P ANTONE®*- certified colors, use the d[...]

164 Chapter 9 Image quality EN Adjusting color balance This printer features automatic color calibration to provide high-quality color output. In situations that require critical color control, you can manually adjust the density balance of the printer ’s four toner colors. CAUTION This procedure should only be performed by your network administr[...]

EN Image formation troubleshooting 165 9 Color balance calibration p age S tep 2: Adjust the cyan (C) density setting Examine the cyan density bar (C) on the color balance calibration page from a distance of 2 meters (6 feet). If the center oval matches the background pattern more than the other ovals, the cyan density does not need to be adjusted [...]

166 Chapter 9 Image quality EN 3 Press S ELECT to save the value. An asterisk ( * ) displays next to the selected setting. Step 3: Adjust the magent a (M ) density setting Examine the magenta density bar (M). If the center oval matches the background pattern more than the other ovals, the magent a density does not need to be adjusted and you should[...]

EN Image formation troubleshooting 167 9 2 Press the right side of the V ALUE key to increase the value, or press the left side to decrease it, until the number corresponding to the oval that most closely matches the background pattern is displayed. 3 Press S ELECT to save the value. An asterisk ( * ) displays next to the selected setting. S tep 6:[...]

168 Chapter 9 Image quality EN Image Defect T able For more information, see the page numbers below each image. Image Defect T able Background scatter (see page 170) Banding and horizontal lines (see page 170) Black lines (see page 172) Black or partially black pa ges (see page 172) Blank page or white pages (see page 173) Blank spots (see page 174[...]

EN Image Defect Table 169 9 Additional defect information is found in the following sections: • Overhead transparency defect s (see p age 184) • Repetitive defects (see p age 187) Irregular raised spots or stray toner (see page 178) Light print, dark print, faded print (see page 178) Light black or no black print (see page 179) Loose toner (see[...]

170 Chapter 9 Image quality EN Image defect det ails • The media does not meet HP specifications. • The toner cartridge is defective. • The inside of the printer is dirty . • The transfer roller is dirty or worn. Generate a cleaning page. Banding occurs when solid fill areas show streaks or bands of shade variations. This can be caused by: [...]

EN Image defect details 171 9 • Observe the following from the test sample: – Check the spacing or “pitch” between the defect s. – Check to see if the defect spans all color planes. – If the defect is in all color planes, does the defect produce a straight line through all color planes or does it move from one color plane to the next? ?[...]

172 Chapter 9 Image quality EN • The toner cartridge is defective. • The toner cartridge is not seated properly . • The fusing assembly is contaminated or damaged. • The static eliminator teeth are cont aminated or defective • The imaging drum is damaged or the waste toner collection in the drum is full. Replace the imaging drum. • Chec[...]

EN Image defect details 173 9 • Y our software application is sending an extra p age-eject command. – Check the software’ s printing configuration information. • There is a problem with the network configuration. Some sharing devices on networks may generate a blank page as a sep arator . – Check with the network administrator . • The p[...]

174 Chapter 9 Image quality EN • The page length and margins are not set correctly for the p aper size. V erify that the ribbon connector at J1307 of the HVPS is properly seated. • If the HVPS has been removed recently , verify that the ribbon connector from the DC controller PCA to the HVPS is properly seated at both ends. • V erify that the[...]

EN Image defect details 175 9 • Make sure clutch CL2 is connected (plugged into the paper PCA). • This defect can be caused by improper timing on the ITB clutch gears. Make sure that the cams are in sync. The two white gears on the left side of the printer should have two timing marks pointing toward each other . – Cams with a single line sho[...]

176 Chapter 9 Image quality EN • The paper does not meet HP p aper specifications. • The printer ’s operating environment does not meet specifications. • The print density is set incorrectly .Change to a darker setting and retry printing. • The DC controller PCA is defective. • The high-voltage power supply PCA is defective. • The tra[...]

EN Image defect details 177 9 • The internal mirror or optics are contaminated. • The laser scanner is damaged. • The document scanner needs to be recalibrated. • There is a problem in the contact image sensor . • There is a problem in the formatter . Full-page ghosting occurs when an image print s in full color on one page, but a faded c[...]

178 Chapter 9 Image quality EN • T oner collected on the transfer belt can cause smudging on the back of the page. Smudges commonly appear on the edges of p ages after the media size is changed. The belt is self-cleaning and the smudging will normally clear within a few pages. • T oner on the edge of the media is usually caused by toner collect[...]

EN Image defect details 179 9 • The letterhead you are using is printed on rough paper . T ry a smooth xerographic paper . If this solves your problem, consult with the printer of your letterhead to verify that the paper used meet s the specifications for this printer . • Media does not meet the specifications for this printer . Only use media [...]

180 Chapter 9 Image quality EN • Loose toner is in the printer . • The toner cartridge is defective. • The paper is too smooth. • The driver setting for the paper type is wrong. • The fuser is defective.. Print a configuration page, and refer to the color blocks at the bottom of the page. Replace the toner cartridge of the color or colors[...]

EN Image defect details 181 9 • Use paper with lower resistivity . • Make sure the humidity and temperature are within specifications. • Do not use Automatic Duplex mode. Duplex manually or not at all. • Check for a defective light pipe sensor . If defective, replace the toner level sensor . • Remove the toner cartridge and manually check[...]

182 Chapter 9 Image quality EN • There is dirt on the paper . • The fusing rollers are dirty . • The paper does not meet HP specifications. • The toner cartridge is defective. • The fusing assembly is defective. • There is dirt in the printer . • The static eliminator is dirty or is not grounded, allowing a st atic charge to remain on[...]

EN Image defect details 183 9 • This may be a repetitive defect. If so, the lines will be repeated at a consistent interval down the page. • The printer needs to be cleaned. • There is a problem in the heating element. V ertical white lines • If white lines or streaks appear only in the black areas of the printed media, print several config[...]

184 Chapter 9 Image quality EN Overhead transp arency defect s Overhead transparencies may display any of the image quality defect s shown in the previous samples. In addition, because transparencies are pliable while in the print path, they are subject to being marked by the media-handling components. Note Allow transparencies to cool at least 30 [...]

EN Overhead transparency defects 185 9 • If the transparency colors are dull or dark, ensure the transp arencies meet the specifications for this printer (part number C2934A for letter , and C2936A for A4). • The selected colors are undesirable when printed. Select dif ferent colors in your software application or printer driver . • Spots and[...]

186 Chapter 9 Image quality EN If the transparencies have streaks, this could be due to condensed wax from the toner making its way onto the fuser assembly rollers during the fusing process. T ry cleaning the fuser rollers using the following process: 1 Saturate a corner of a lint-free, static-free wipe with isopropyl alcohol. 2 Open the alternate [...]

EN Repetitive defects troubleshooting 187 9 Repetitive defect s troubleshooting Repetitive defects are defect s that occur on the p age. Most repetitive defects are caused by problems with one of the following: See the service manual for the repetitive defect ruler . See page 188 for the defect spacing chart. CAUTION Do not expose the imaging drum [...]

188 Chapter 9 Image quality EN • If the problem is dust, remove the dust with isopropyl alcohol applied with a lint-free, static-free wipe. T ry this only if the print defect is unacceptable and the only other alternative is replacing the imaging drum. • Defects caused by exposure to light might clear up over time. If severe, replace the imagin[...]

EN Repetitive defects troubleshooting 189 9 Imaging drum exposed to light (not to scale) www.GovTechMedia.com[...]

190 Chapter 9 Image quality EN www.GovTechMedia.com[...]

EN Overview 191 Overview This chapter provides wiring diagrams. www.GovTechMedia.com[...]

192 Chapter 10 Wiring diagrams EN Wiring Diagrams Wiring diagram for 4500 serial number xxG ... and below (1 of 2) J1007 J61 J62 J60 J601 J602 J1009 J1004 5 J1013 J1010 J1008 J1006 Cassette paper sensor Casset te paper size detection swi tch Multi-p urpose tray pick-up solenoid Multi-p urpose tra y paper sensor Last paper sensor Cassette pick-up so[...]

EN 193 10 Wiring diagram for 4500 serial number xxG ... and below (2 of 2) Fusing unit pressure release sensor DC controller Laser/scanner assembly 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 J32 J31 PS6 13 13 123 25 FIX ICL J1601 J1301 J1001 J1019 J9002 J1012 J701 J9003 J9004 7 51 3 High-voltage power supply DUPLEX UNIT Devel[...]

194 Chapter 10 Wiring diagrams EN Wiring diagram for 4500 serial number xxH... and above and 4550 (1 of 2) www.GovTechMedia.com[...]

EN 195 10 Wiring diagram for 4500 serial number xxH... and above and 4550 (2 of 2) www.GovTechMedia.com[...]

196 Chapter 10 Wiring diagrams EN www.GovTechMedia.com[...]

EN Overview 197 Overview This chapter provides information on obtaining training, support, and materials. www.GovTechMedia.com[...]

198 Chapter 11 Services and support resources EN How to get training Lecture/lab training (U.S. only) Service technicians who want individual, hands-on training can attend regularly scheduled lecture/lab training classes. These classes are of fered throughout the country . T o receive the latest schedule, call HP FIRST at (800) 333-1917, or see the[...]

EN Support resources—North America 199 11 Support resources—North America HP Customer Care Reseller Sales and Service Support Center The HP Customer Care Reseller Sales and Service Support Center is available for technical support to assist service technicians. The support center can be reached at (800) 544-9976 (U.S.). HP end-user support opti[...]

200 Chapter 11 Services and support resources EN to anyone with FTP access to the Internet. Access through the World Wide W eb is available at URL http://www .hp.com/go/support or http://www .hp.com/go/resellertraining/. T elephone assist a nce—in warranty Call the HP Customer Care Center at (208) 323-2551 Monday through Friday from 6 am to 10 pm[...]

EN HP end-user support options 201 11 Ordering p art s Field replaceable and accessory part numbers are found in Chapter 8 of this manual. Replacement part s can be ordered from HP’ s Commercial Support Services Organization-Americas (CSSO-A) or HP’ s Commercial Support Services Organization-Europe (CSSO-E). Use only accessories specifically de[...]

202 Chapter 11 Services and support resources EN • Other local telephone numbers may also be available Ordering field replaceable unit s The HP Color LaserJet 4500 printer is designed to be rep aired by replacing field replaceable units (FRUs). Part numbers are located in chapter 8 and can be ordered from CSSO-A or CSSO-E. Exchange and recycling [...]

EN HP end-user support options 203 11 Ordering document ation and software The table below shows ordering sources for related document ation and software. T elephone numbers for the various sources are: • Commercial Support Services Organization-Americas (CSSO-A) (1)(800) 227-8164 (US only) • Commercial Support Services Organization--Europe (CS[...]

204 Chapter 11 Services and support resources EN Support resources—Asia Pacific and Europe HP Customer Care Centers in Asia Pacific Country Customer Care Center Service Center Singapore 65-2725300 Hong Kong 800-96-7729 Vi etnam 84 8 8234530 84 8 8294485 84 4 9431718 Indonesia 62-21-3518788 Philippines 632-829-5387 632-829-5388 632-829-5389 Thaila[...]

EN 205 Acronyms and abbreviations AC Alternating current AUTOCONT Automatic continue BNC A 10-Base 2 connector used with coaxial cables CFG Configuration on control panel DC Direct current DCPS Direct current power supply MS-DOS Disk operating system DIMM Dual inline memory module DPI Dots per inch DTR Data terminal ready DTR line Data terminal rea[...]

206 Appendix A Acronyms and abbreviations EN MB Megabyte MEM Memory MIO Modular input/output MP pickup roller Multipurpose tray pick-up roller MP T ray Multipurpose tray MSDS Material safety data sheets NVRAM Nonvolatile random-access memory Ohm A unit of measure of electrical resistance OHT Overhead transparency PCA Printed-circuit assembly PCB Pr[...]

EN Index 207 Symbols +24 Vdc power supply 72 +3.3 Vdc power supply 72 +5 Vdc power supply 72 A abbreviations 205 – 206 AC power supply 72 accessories See also consumables acronyms 205 – 206 adjusting color balance 164 air filters 114 alphabetical parts list 148 – 155 assemblies PCB 136 B bidirectional parallel cable pin configuration 81 bidir[...]

208 Index EN imaging drum cartridge 114 intermediate transfer belt 114 toner cartridges 114 transfer roller 114 consumables 118 approximate replacement intervals 102 drum kit 102 error messages 103 fuser kit 103 HP 6 identifying 114 ordering 201 replacing 103 toner cartridges 102 transfer kit 103 control panel messages 8 – ?? alphabetical message[...]

EN Index 209 Index home position detection sensor (PS5) 20 HP Customer Care Center 200, 204 HP JetDirect print servers 77 HP LaserJet Family Paper Specification Guide 92 HP Parts Direct Ordering 113 HP Planet Partners 108 HPColorSmart II 161 I I/O 75 LocalTalk 78 I/O switching 80 identifying consumables 114 IEEE-1284 compliant parallel cables 82 im[...]

210 Index EN memory 115 configuration report 84 ordering 115 part numbers 115 product description 115 menu service 54 messages, control panel 8 – ?? models drum drawers 124 monitors, affect on color 159 N network connectivity 116 NVRAM 60 NVRAM initialization instructions 69 results 69 NVRAM values, changing 51 O ordering consumables 201 document[...]

EN Index 21 1 Index power supply +24 Vdc 72 +3.3 Vdc 72 +5 Vdc 72 AC 71, 72 DC 71, 72 high-voltage 71, 74 print servers HP JetDirect 77 printer cable pin configuration 81 configuration page, interpreting 83 interfaces 81 line voltage 6 messages 103 operation commands 51 options 117 protecting 6 register adjust 51 storage 6 testing 51 troubleshootin[...]

212 Index EN service mode access 52 menu 51 menu map 53 service menu items 54 service menu, access 52 software, ordering 203 Standard RGB (sRGB) 161 support assistance 199 information, obtaining 199 support resources 199 Asia Pacific 204 supported products iv system requirements, Fast InfraRed Receiver (FIR) 78 systems, protection 74 T test 61 deve[...]

EN Index 213 Index W warranty assistance 199 in-warranty 200 post-warranty 200 Windows FIR compliance 79 wiring diagrams 192 – 195 www.GovTechMedia.com[...]

214 – Index EN www.GovTechMedia.com[...]

Serv ice W e bsites HP Customer Care Online Software driv ers, suppor t documentation, and frequently ask ed questions http://www .hp.com/go/support HP T echnical T raining (Nor th Amer ica) Classes and schedules http://www .hp.com/go/resellertraining Pa r t s P ar ts inf or mation http://outfield.external.hp.com/spi/welcome.htm F or suppor t resou[...]

Serv ice telephone n umber s All numbers listed are f or Nor th America only . HP Customer Care Reseller Sales and Ser vice Suppor t Center Dealer pre/post sales and ser vice suppor t (800) 544-9976 U .S . Only (800) 363-6594 Canada Customer Care Center User technical-suppor t questions, LaserJet f ax (208) 323-2551 Customer Inf or mation Center Sa[...]

EN www.GovTechMedia.com[...]

*5963-7921* * * 5963-7921 596 3 - 79 2 1 cop y r i ght © 2000 He w let t-P ac k ar d C o . ww w .hp .com/su ppor t/lj4 5 50 english www.GovTechMedia.com[...]